WPT
wpt / dom / events / Event-subclasses-constructors.html
Spec: DOM ↗
Runs: Chrome 155.0.8039.0 (wpt@a4fcd77aa, 2026-09-03) | Firefox 157.0a1 (wpt@cc4d45aa0, 2026-09-03) | Safari 251 preview (wpt@5ce815a83, 2026-08-27) | Ladybird 1.0-a9df8 (wpt@9b4cabf6d, 2026-09-03) | Servo Servo 0.6 (wpt@7e3d005d7, 2026-09-03) | Blitz 188486089 (wpt@a95401e4e, 2026-09-02)
View on the Blitz WPT dashboard | Open test on wpt.live | wpt.fyi
| Chrome | Firefox | Safari | Ladybird | Servo | Blitz | |
|---|---|---|---|---|---|---|
| Total | 49/49 | 49/49 | 49/49 | 49/49 | 42/49 | NOT RUN |
| Subtest | Chrome | Firefox | Safari | Ladybird | Servo | Blitz |
|---|---|---|---|---|---|---|
| Event constructor (no argument) | PASS | PASS | PASS | PASS | PASS | — |
| Event constructor (undefined argument) | PASS | PASS | PASS | PASS | PASS | — |
| Event constructor (null argument) | PASS | PASS | PASS | PASS | PASS | — |
| Event constructor (empty argument) | PASS | PASS | PASS | PASS | PASS | — |
| Event constructor (argument with default values) | PASS | PASS | PASS | PASS | PASS | — |
| Event constructor (argument with non-default values) | PASS | PASS | PASS | PASS | PASS | — |
| UIEvent constructor (no argument) | PASS | PASS | PASS | PASS | PASS | — |
| UIEvent constructor (undefined argument) | PASS | PASS | PASS | PASS | PASS | — |
| UIEvent constructor (null argument) | PASS | PASS | PASS | PASS | PASS | — |
| UIEvent constructor (empty argument) | PASS | PASS | PASS | PASS | PASS | — |
| UIEvent constructor (argument with default values) | PASS | PASS | PASS | PASS | PASS | — |
| UIEvent constructor (argument with non-default values) | PASS | PASS | PASS | PASS | PASS | — |
| FocusEvent constructor (no argument) | PASS | PASS | PASS | PASS | PASS | — |
| FocusEvent constructor (undefined argument) | PASS | PASS | PASS | PASS | PASS | — |
| FocusEvent constructor (null argument) | PASS | PASS | PASS | PASS | PASS | — |
| FocusEvent constructor (empty argument) | PASS | PASS | PASS | PASS | PASS | — |
| FocusEvent constructor (argument with default values) | PASS | PASS | PASS | PASS | PASS | — |
| FocusEvent constructor (argument with non-default values) | PASS | PASS | PASS | PASS | PASS | — |
| MouseEvent constructor (no argument) | PASS | PASS | PASS | PASS | PASS | — |
| MouseEvent constructor (undefined argument) | PASS | PASS | PASS | PASS | PASS | — |
| MouseEvent constructor (null argument) | PASS | PASS | PASS | PASS | PASS | — |
| MouseEvent constructor (empty argument) | PASS | PASS | PASS | PASS | PASS | — |
| MouseEvent constructor (argument with default values) | PASS | PASS | PASS | PASS | PASS | — |
| MouseEvent constructor (argument with non-default values) | PASS | PASS | PASS | PASS | PASS | — |
| WheelEvent constructor (no argument) | PASS | PASS | PASS | PASS | PASS | — |
| WheelEvent constructor (undefined argument) | PASS | PASS | PASS | PASS | PASS | — |
| WheelEvent constructor (null argument) | PASS | PASS | PASS | PASS | PASS | — |
| WheelEvent constructor (empty argument) | PASS | PASS | PASS | PASS | PASS | — |
| WheelEvent constructor (argument with default values) | PASS | PASS | PASS | PASS | PASS | — |
| WheelEvent constructor (argument with non-default values) | PASS | PASS | PASS | PASS | PASS | — |
| KeyboardEvent constructor (no argument) | PASS | PASS | PASS | PASS | PASS | — |
| KeyboardEvent constructor (undefined argument) | PASS | PASS | PASS | PASS | PASS | — |
| KeyboardEvent constructor (null argument) | PASS | PASS | PASS | PASS | PASS | — |
| KeyboardEvent constructor (empty argument) | PASS | PASS | PASS | PASS | PASS | — |
| KeyboardEvent constructor (argument with default values) | PASS | PASS | PASS | PASS | PASS | — |
| KeyboardEvent constructor (argument with non-default values) | PASS | PASS | PASS | PASS | FAIL | — |
| CompositionEvent constructor (no argument) | PASS | PASS | PASS | PASS | FAIL | — |
| CompositionEvent constructor (undefined argument) | PASS | PASS | PASS | PASS | FAIL | — |
| CompositionEvent constructor (null argument) | PASS | PASS | PASS | PASS | FAIL | — |
| CompositionEvent constructor (empty argument) | PASS | PASS | PASS | PASS | FAIL | — |
| CompositionEvent constructor (argument with default values) | PASS | PASS | PASS | PASS | FAIL | — |
| CompositionEvent constructor (argument with non-default values) | PASS | PASS | PASS | PASS | FAIL | — |
| SubclassedEvent constructor (no argument) | PASS | PASS | PASS | PASS | PASS | — |
| SubclassedEvent constructor (undefined argument) | PASS | PASS | PASS | PASS | PASS | — |
| SubclassedEvent constructor (null argument) | PASS | PASS | PASS | PASS | PASS | — |
| SubclassedEvent constructor (empty argument) | PASS | PASS | PASS | PASS | PASS | — |
| SubclassedEvent constructor (argument with default values) | PASS | PASS | PASS | PASS | PASS | — |
| SubclassedEvent constructor (argument with non-default values) | PASS | PASS | PASS | PASS | PASS | — |
| UIEvent constructor (view argument with wrong type) | PASS | PASS | PASS | PASS | PASS | — |